Magnetic separator.



- QM 304M041 No. 823,301. PATENTED JUNE 12, 1906.

F. T. SNYDER. MAGNETIC SEPARATOR.

APPLICATION FILED SEPT.2, 1902.

WiInesses. Invefifur 4 M Tr derlcm "R in [15! V X H AZ ticles being thus rnnnnmoir '1. errors, 0F KAN? M ESNE ASSIUNMIIN' S, TO PAN Y, OF CHlLU-U-i-i ILLINOlie -ZAS lJlTY, MISSOURI, ASSIGNOR, BY

wrEaNArrioNAL SEPARATOR con- A CORPORATION OF NEW JERSEY.

' MAGNETIC SE-PARATOR.

Specification of Letters Patent.

Patented June 12, 1906.

application filed September 2, 1902. Serial No. 121,795?

.tion, reference being had To all whom, it may concern.-

Be it known that I, FREDERICK T. SNY- DER, a citizen. of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented a certain new and useful Improvement in Magnetic Separators, (Case No. 1 of which the following is a full, clear, concise, and exact descripto the accompanying drawing, forming a part of this specification.

vMy invention relates to magnetic separators and, generally speaking, contemplates the use of the edge of a magnetic field or narrow area of magnetic concentration, as a riffie, in a line diagonal to the main direction of passage of the materials to be separated to arrest and divert the more permeable par ticlcs, in combination with means for imparting a reciprocating motion to said materials to cause a not travel of the permeable par' ticles along the riffie, whereby said particles are separated from the remainder of the material, which continues its general direction of travel. I provide an inclined chute, preferably in the shape of a plane, the material to bseparated being fed to the chute through ahopper. Magnets, either permanent or electrically energized, are disposed below the chute so that an edge of the pole-faces thereof is disposed diagonally across the bottom of the chute. As the mixture of permeable and non-permeable particles now rolls down the chute the more'permeable particles are retarded at the diagonal magnetic edges presented by the magnets, the particles being guided toward the side of the chute to be deposited in su'Ltablylaced receptacles. The non-permeable and esser ermeable particles roll straight down the inc ined chute and fall into a different receptacle, the permeable parseparated from the others.

By presenting several magnetic edges to the chute a more thorough separation is assured, for should a permeable article pass by the first magnetic edge-it will be arrested and guided by the succeeding edge or edges.

If the inclination of the ath along which the diverted particles ten to move be not sufficient to, cause them to slide freely, as would be the case when the chute were not straight down the inclined, the arrested particles may be made to move to one side by shaking or vibrating the chute back and forth in a direction substantially parallel with the edges of the magnleltilc field, which edges are preferably para e In the drawing I have illustrated apparatus for causing separation of permeable particles by means of magnetic riflles.

hopper 1 serves to feed the material to be separated to the chute 2, which may be inclined, as shown, and which ispreferably composed of material having a low magnetic permeability. Cores 3 3 may be permanently magnetized or electrically energized by means ofenergizin -coils 4 4, connected with a source of current 5. These magnets are disposed below the chute 2 so that the edges 6 6 of the pole-faces thereof are in contact with or very close to the bot-tom surface of the chute and extending in a diagonal direction. The magnets will be convergent toward the edges, and as thematerial to be separated now approaches the diagonal magnetic edge 6 the more permeable particles will be attracted and retarded and guided along this edge to be deposited into a spout 7. Should the edge 6 be unable to arrest and guide all the more permeable particles, these particles will ass on until the edge 6 is reached and wil be guided along this edge and into a spout 7. Any number of edges may thus be presented to thechute and a thorough separation of the permeable particles assured. The permeable particles may be received in receptacles 8, while the non permeable particles pass chute unattracted by the magnets, to be deposited in a receptacle 9.

To assist the guidance of the permeable particles toward the side of the chute, I provide cam mechanism for shaking or vibrating thechute, and the chute may be mounted upon spring-supports 10 10. Cam-wheels 11 11., secure to shafts 12 12, mounted in bearings 13 13, may be driven through the medium of pulleys 14 14 and belts 15 15, the cams engaging one or more of the supports 10 to cause vibration of the chute in a directipn substantially parallel to the magnetic e ges.

The magnetic edges instead of being par allel to each other, as shown, may be disposed at various angles, and other changes in the magnetic field created by the form and structure of the various parts may bereadfly made ,without departing. from the principle and scope otthe invention. I .do 9 .thcrefore wish tube-limited to the precise structure herein shown; but

I claim as new and desire to secure by Letters Patent I 1. In a magnetic separator, the combination with a plane surface, of means for feeding materials to be separated to i saidsurface, means for causing magnetic riffles diagonally along said-surtace and means for vibrating said V surface in, a direction substantially parallel to saidgifiics,substantially as described. 2 In a magnetic separator, the combina: tion with an inclined chute in the shape. of a plane, of means for feeding-materials to be separated to said ,chute,,magnetic edges presented-to tha,under,. side of-said chute and extending diagonally across .said chute to, form .magneticrif fies -in said,=chutc, and means for causingvibration of said chutein. a direction substa tiallyparallelto said magnetic edges,

substantially as described. p 3. In; a anagnetic separator, thev combinao w th a s op ngtableand means t'orteeding material to be separated upon :the table ,at-the top to pass said, materials down the for: establishing a magnetic i slope, of ,means field through the table in, a, line diagonal to the line of passageof said materialto. form a j m e c ffle,

f and means, for imparting 1 a diflerential reciprocating motion to said table In witness whereof substantially parallel to the line of said magtending in lines diagonal to the direction of passage of said materials, and means for imparting a differential reciprocating motion to the table to cause a'net movement of the 'attracted. material along said areas of magnetic concentration.

- 5. In a magnetic separator,theonibination with an inclined chute, of meansfor feed- :ing materials to'sa-id chute, amagnet' beiow the chute having one of 'its polar edges disposed diagonally across' thebottom of the chute to-divert permeable parti'elesfronrthe stream :of -rn aterial passing down the'chute, supports for said chute, and rotatable cams for shaking said supports to-'--vibrate--said chute in a direction substantially parallelto the said polar edge to facilitate the travel of said diverted particles."

I p I hereunto subscribe my name this 22d day of August, A. D.- 1902.

FREDERICK T. SNYDER,

Witnesses-i GEORGE L. ORA'GG; HARVEY L. HANsoN. 

